.nested-fields
  = link_to_remove_nested_association(:child, f)
  - autocomplete_params = {controller: '/backend/product_nature_variant_components'}
  = f.input :name, autocomplete: autocomplete_params
  = f.referenced_association :part_product_nature_variant, controller: '/backend/product_nature_variants'
  - if depth < 10
    = f.nested_association :children, locals: {depth: depth + 1 }, controller: '/backend/product_nature_variants'
